Jack for slugging and nailing heels



No. 609,874. Patented Aug. 30, |898. L. A. CASGRAIN.

I JACK FOR SLUGGING AND NAILING HEELS.

(Application led Apr. 1'8, 1897.)

(No Model.)

UNITED STATES PATENT OFFICE.

LOUIS A. CASGRAIN, OF'VINCHESTER,YMASSACHUSETTS, ASSIGNOR TO JAMES W. BROOKS, PRINCIPAL TRUSTEE, OE PETERSHAM, AND FRANK E. STAN- LEY, ASSOCIATE TRUSTEE, OE 'SVVAMPSCOTT, MASSACHUSETTS.

JACK FoRsLVUGeING, AND NAILING HEELs.

SPECIFICATION forming part of Letters Patent No. 609,874, dated August 30, 1898. Application led April 16, 1897. Serial No. 632,466. (No model.)

T0 all whom, it may concern:

Be it known that I, LOUIS A. CASGRAIN, of Winchester, county of Middlesex, State of Massachusetts, have invented an Improvement in Jacks for Slugging and Nailing Heels, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts. f

Boots and shoes having spring or other heels to be slugged come to the Aslugging#machine on a last. The holes in the last are frequently considerably worn and sometimes they are not bored true, and consequently when such a last is put on a stationary upright pin of a jack the heel to be slugged cannot be kept in proper relation to the bottom of the nose or presser-plate. I have aimed to produce a jack which may readily adapt itself to any hole in any last found in the boot or shoe.

My improved jack containsa rising-andfallin g spring-controlled shank provided with a pivoted last-pin on which the last is placed, the holder for said pin being normally acted upon by a spring which tends to tip the lastpin out of its vertical position in adirection away from the edge-gage, Vand the operator, grasping in his hand the toe and heel of the shoe, may tip it and the said last-pin more or less toward its vertical position, to thus insure the proper contact of .the heel with the nose or foot-plate against which the heel is borne,

said nose or foot-plate being either horizontal or somewhat inclined from horizontal position, according to whether or not the slugs or nails are to be driven into a fiat or into a bevel surface, as is the case with spring-heels.

The last-pin shown is free to rotate in a holder, shown as a sector-shaped block, Vfree to turn on a pivot between ears of theforked upper end of the shank referred to, said holder having a series of teeth, with which cooperate a toothed locking device, shown as a movable n-shaped block having teeth and located between the ears of said shank, said block being interposed between said holder and the top of a sleeve rising from the swing-plate of the jack, so that when the shank carrying the last-pin and its holder is pushed down against the action of the spring surrounding it, this being the case whenever a heel is being slugged or nailed, the said locking device when the shank is depressed, due to pressure applied to the bottom of the last mounted on said last-pin, meets the upper end of said hub or sleeve rising from the swing-plate, and said may, if the demands of Vthe work require it,

somewhat tip the shoe and the last-pin after the nail haslbeen driven and while the shoe is being fed, the feeding devices then acting to feed theshoe on the horn, the upward pressure of `which is at such time released in usual manner. Y

Figure l, in elevation, shows a suiicient portionf of a nailing-machine with my improvements added to enable my invention to be understood, the last-pin being supposed to be in its lowest position; Fig. 2, a side elevation of the devices shown in Fig l; Fig.. 3, a detail showing the holder `for the last-pin and the shank and swing-plate in section. Fig. 4 shows `the last-pin as it will appear in its 'highest position and free from any pressure.

Fig. 5 shows the shank detached. Fig. 6 is v a top or plan view of the parts shown in Fig.

'2 with the last removed, and. Eig. 7 shows the locking device detached.

Y In the drawings let A3 represent part of a rigid extension from the column of a nailingmachine of usual construction-fas, for instance, as shown by like letter in United States Patent No. 490,625, ldated January 2l, 1893. i This extension receives on it a post A4, on the upper end of which I clamp by a screw ct the split sleeve-like shank a of a bedplate 0,2, having at one side an arm a3, provided with stops a4, 'the said arm "receiving,

`as shown, a stud-screw d5, over which` is fitted a slotted arm b of swing-plate h', resting on the plate a2 and free to slide and be moved about on said plate as' the heel of the boot or shoe is being presented under the driver of IOO the nailing-machine with which the jack is to be used. The swing-plate has an upright tubular hub b2, in which and throughv a spring c, resting on a shoulder b3 of the hub, is entered the shank-piece c', enlarged and bifurcated at its upper end to leave ears c2. The stops a4 control the extent of the lateral swinging of the plate b', while a stud-screw d5 serves as a guide for the arm b of said plate, and instead of the particular guide shown I may use any well-known equivalent devices.

The shank has a spline c3, which enters a groove inside the hub and which prevents the shank from rotating in the hub, but lets it rise freely under the action of said spring c, as in Fig. 4, a washer c4, screwed to the lower end of said shank, acting as a stop to limit the ascent of the shank.

vBetween the ears C2, I place the toothed n-shaped locking device d, it embracing by its legs the portion c6 of the shank. The ears c2 receive a suitable pivot, (shown as a studscrew (12,) tapped at one end and entered by a screw cl3. (See Fig. 2.), This stud serves as a pivot for the holder e, which carries the freely-rotatable last-pin e', it entering a hole in the holder, (see Figs. 3 and 4,) where it is provided with an annular groove, in which enters the end of a screw e2.

The shank has a connected spring e3, held in place by suitable screws e4, said spring normally acting to tip the last-pin over from a vertical line, as in Fig. Il'.

I have herein shown a shoe f, having a spring-heel f', mounted on a last f2. This last has a hole in its crown, which is iitted over the last-pin, and this done the operator, engaging the toe and heel of the last by his hands, turns the holder and last-pin up far enough to put the bottom of the heel end of the sole properly under the usual nose or footplate, (not shown,) and in putting vthis shoe in place the pressure on the sole is sufficient to depress the last-pin and the shank far enough to cause the toothed lower conveXed edge of the holder e to enter the concaved toothed part of the locking device d, and thereafter duringthe time that the slugs or nails are being driven into the heel the inclination of the last will be preserved.

This my invention is applicable for use in driving slugs or'nails into heels of any usual or desired shape, and by tipping the last-pin the inclination to which the slugs or nails may be driven' into the heel may be varied to suit the demands of the particular heel being slugged or nailed.

The under side of the swing-plate (but it may equally well be the upper side of the bed-plate) is provided with a series of grooves or spaces to break up the otherwise smooth plain surfaces which would be exposed for contact, such breaking up of the said smooth surfaces doing substantially away with the friction between the said plates.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-- l. In a jack for holding a boot or shoe when the heel is having fastenings driven into it, a swing-plate, and a vertically-movable shank carried thereby, said shank having a pivoted holder provided with a last-pin, substantially as described.

2. In a jack, a shank, a guide for said shank, a spring to support said shank, and a pivoted toothed holder provided with a lastpin; combined with a toothed locking device interposed between said shank and said toothed holder, said locking device engaging said holder when said shank is depressed, substantially as described.

3. A swing-plate having a tubular hub, means to support said swing-plate, a shank having a forked upper end, a spring interposed between the said forked upper end and said hub and normally acting to keep said shank elevated, means to limit the upward movement of said shank under the action of said spring, combined with a pivoted holder having a last-pin, and a locking device arranged to be engaged with said holder to lock the same when the holder and its shank are depressed due to pressure applied to the bottom of the last supported on said last-pin, substantially as described.

4. In a jack, a shank, a guide for said shank, a spring to support said shank, and a pivoted toothed holder provided with a lastpin, and a spring to act on said holder to normally tip it and its last-pin out of vertical position; combined with a toothedlocking de# vice interposed between said shank and said toothed holder, said locking device engaging said holder when said shank is depressed, substantially as described.

5. The plate a2 having stops and a suitable guide, combined with a swing-plate having an arm cooperating with said guide, a shank fitted in said swing plate, and a pivoted holder mounted in said shank and provided with a last-pin, substantially as described.

6. The plate dzhaving a stud-screw d5 and a swing-plate resting on said plate CL2, and having a slotted arm embracing and free to slide on said stud-screw, combined with a IOO IIO

shank fitted into said swing-plate and pro- 

